FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    ffmpeg \
    libsndfile1 \
    libsndfile1-dev \
    gcc \
    g++ \
    gfortran \
    libopenblas-dev \
    liblapack-dev \
    pkg-config \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Upgrade pip, setuptools, wheel
RUN pip install --no-cache-dir --upgrade pip setuptools wheel

# Copy requirements
COPY requirements.txt .

# Install Python dependencies in stages for better caching
RUN pip install --no-cache-dir numpy==1.24.3
RUN pip install --no-cache-dir scipy==1.11.4
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY src/ ./src/
COPY alembic.ini .
COPY models/ ./models/

# Create models directory if not exists
RUN mkdir -p /app/models

# Expose port
EXPOSE 8000

# Run migrations and start server
CMD alembic upgrade head && \
    uvicorn src.api.main:app --host 0.0.0.0 --port 8000